Visualizing delocalized correlated electronic states in twisted double bilayer graphene

Canxun Zhang; Tiancong Zhu; Salman Kahn; Shaowei Li; Birui Yang; Charlotte Herbig; Xuehao Wu; Hongyuan Li; Kenji Watanabe; Takashi Taniguchi; Stefano Cabrini; Alex Zettl; Michael P. Zaletel; Feng Wang; Michael F. Crommie

doi:10.1038/s41467-021-22711-1

Nature Communications (May 2021)

Visualizing delocalized correlated electronic states in twisted double bilayer graphene

Canxun Zhang,
Tiancong Zhu,
Salman Kahn,
Shaowei Li,
Birui Yang,
Charlotte Herbig,
Xuehao Wu,
Hongyuan Li,
Kenji Watanabe,
Takashi Taniguchi,
Stefano Cabrini,
Alex Zettl,
Michael P. Zaletel,
Feng Wang,
Michael F. Crommie

Affiliations

Canxun Zhang: Department of Physics, University of California
Tiancong Zhu: Department of Physics, University of California
Salman Kahn: Department of Physics, University of California
Shaowei Li: Department of Physics, University of California
Birui Yang: Department of Physics, University of California
Charlotte Herbig: Department of Physics, University of California
Xuehao Wu: Department of Physics, University of California
Hongyuan Li: Department of Physics, University of California
Kenji Watanabe: Research Center for Functional Materials, National Institute for Materials Science
Takashi Taniguchi: International Center for Materials Nanoarchitectonics, National Institute for Materials Science
Stefano Cabrini: Molecular Foundry, Lawrence Berkeley National Laboratory
Alex Zettl: Department of Physics, University of California
Michael P. Zaletel: Department of Physics, University of California
Feng Wang: Department of Physics, University of California
Michael F. Crommie: Department of Physics, University of California

DOI: https://doi.org/10.1038/s41467-021-22711-1
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 8

Abstract

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Twisted double bilayer graphene is a novel van der Waals system that hosts an electric-field-tunable correlated state at half-filling. Here the authors reveal the delocalized nature of this state by scanning tunnelling microscopy and spectroscopy, suggesting an underlying mechanism of symmetry breaking driven by non-local exchange.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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